EP0582401B1 - Grue montée sur un camion avec dispositif pour installer le contrepoids - Google Patents

Grue montée sur un camion avec dispositif pour installer le contrepoids Download PDF

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Publication number
EP0582401B1
EP0582401B1 EP93305728A EP93305728A EP0582401B1 EP 0582401 B1 EP0582401 B1 EP 0582401B1 EP 93305728 A EP93305728 A EP 93305728A EP 93305728 A EP93305728 A EP 93305728A EP 0582401 B1 EP0582401 B1 EP 0582401B1
Authority
EP
European Patent Office
Prior art keywords
counterweight
crane
truck
mounted crane
gantry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93305728A
Other languages
German (de)
English (en)
Other versions
EP0582401A1 (fr
Inventor
David Pech
Larry Schweigl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manitowoc Crane Companies LLC
Original Assignee
Manitowoc Crane Group Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manitowoc Crane Group Inc filed Critical Manitowoc Crane Group Inc
Publication of EP0582401A1 publication Critical patent/EP0582401A1/fr
Application granted granted Critical
Publication of EP0582401B1 publication Critical patent/EP0582401B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib

Definitions

  • This invention relates generally to the field of load-lifting cranes, and more particularly to a counterweight installation apparatus and method for such cranes.
  • a conventional method of installing counterweight on a crawler-mounted crane consists of positioning the separate counterweight sections on the ground, backing the crane upperworks up to the counterweights, lowering the gantry to allow the counterweight linkage to be attached to a counterweight section, raising the gantry and the counterweight section to a position wherein the counterweight section may be attached to the counterweight support on the rear of the crane upperworks, and attaching the counterweight section to the aforementioned counterweight support. This procedure is repeated until the desired number of counterweight sections are attached to the crane upperworks. This procedure has been used for some truck-mounted cranes as well.
  • Link-Belt A relatively new technique for installing counterweight on truck-mounted cranes was devised by Link-Belt.
  • the Link-Belt design utilizes hydraulic cylinders with attached linkages for raising counterweight sections from a crane carrier deck. This design, as opposed to the conventional design, eliminates the need for the counterweight sections to be positioned on the ground in order to be attached to the crane upperworks. Rather, in the Link-Belt design, the counterweight sections are located on the carrier deck and the crane rotates to the location necessary for the counterweight sections to be attached to the crane upperworks (i.e., the rear of the upperworks facing the counterweight sections). The above-described hydraulic cylinder and linkage arrangement raises and attaches the desired number of counterweight sections to the crane upperworks.
  • Truck-mounted cranes are not as mobile as crawler-mounted cranes, and they typically are higher off the ground than crawler-mounted cranes. Therefore, the counterweight installation and removal apparatus and method of the present invention is designed to accommodate the lack of maneuverability and the height of truck-mounted cranes. Necessarily, this apparatus is designed such that the counterweight moves beyond the crane upperworks after it has been removed, so that the crane upperworks is able to rotate freely.
  • US 2,325,089 discloses a counterweight installation and removal apparatus for a truck-mounted crane consisting of a counterweight with a bottom surface and a surface on the crane carrier deck to engage the bottom surface of the counterweight.
  • a truck-mounted crane having a carrier deck, a counterweight having a bottom surface, and a counterweight installation and removal apparatus, characterized in that:
  • the counterweight installation and removal apparatus of the present invention allows a truck-mounted crane to install and remove its own counterweight. Also, the apparatus allows the counterweight to be positioned on the crane carrier deck, thereby eliminating the need for maneuvering the crane to the counterweights' location. Furthermore, when the counterweight is removed from the crane the crane upperworks has clearance to move past the counterweight.
  • a truck-mounted crane 10 includes a boom 14, a gantry 18, a backhitch 22, an upperworks 26 and a carrier deck 30.
  • a counterweight 34 is supported upon the rear of the crane upperworks 26 by means of supporting pins (not shown). The counterweight 34 stabilizes the crane 10 when large loads are being lifted and maneuvered.
  • the counterweight installation apparatus of the present invention includes one or more inclined surfaces disposed upon the bottom of the counterweight 34 or upon the crane carrier deck 30 to engage a plurality of rollers.
  • two inclined surfaces are provided by the top surfaces of two sets of inclined bars.
  • FIGS. 3-5 which shows only one member of each set of inclined bars and rollers since it is a side view
  • a plurality of rollers 42 are attached to the bottom surface of the counterweight 34 and a plurality of inclined bars 46 are disposed upon the crane carrier deck 30 and positioned to engage the plurality of rollers 42 when the counterweight 34 is lowered to the carrier deck 30.
  • the plurality of inclined bars 46 may be attached to the bottom of the counterweight 34 and the plurality of rollers 42 may be disposed upon the carrier deck 30.
  • the rollers 42 engage the inclined bars 46.
  • the weight of the counterweight 34 causes the counterweight 34 to travel along the inclined bars 46 such that it moves down and away from the crane upperworks 26.
  • other means for moving the counterweight 34 along the inclined bars 46 may be employed.
  • the counterweight 34 travels to a position on the carrier deck 30 which affords sufficient clearance between the counterweight 34 and the crane upperworks 26 to allow the crane upperworks 26 to rotate freely past the removed counterweight 34.
  • any suitable stopping mechanism may be positioned on the crane carrier deck 30 or the counterweight 34 to stop the counterweight 34 at a predetermined location on the crane carrier deck 30.
  • the stopping mechanism comprises a stop plate 50 (FIG. 4) attached to the counterweight 34.
  • the stop plate 50 engages the front face 54 of at least one inclined bar 46 to stop the movement of the counterweight 34 away from the crane upperworks 26.
  • the method of removing the crane counterweight 34 from the crane upperworks 26 includes lowering the counterweight 34 to the crane carrier deck 30, and then moving the counterweight 34 longitudinally away from the crane upperworks 26 to a position on the carrier deck 30 where the counterweight 34 is able to freely rotate past the crane upperworks 26.
  • Detailed steps of the preferred embodiment are best explained in view of FIGS. 1-3 and 6.
  • FIG. 1 shows the crane 10 in a normal operating mode.
  • the counterweight 34 is supported upon the rear of the crane upperworks 26 by means of supporting pins (not shown).
  • the gantry 18 in order to remove the counterweight 34, the gantry 18 is lowered until it rests upon a plurality of gantry cylinders 58, as shown in FIG. 2.
  • a handling linkage 62 attached to the gantry 18 is connected to the counterweight 34.
  • the gantry cylinders 58 are then extended until the weight of the counterweight 34 is lifted from the supporting pins (not shown).
  • the supporting pins are retracted, leaving the weight of the counterweight 34 supported by the gantry 18 and the gantry cylinders 58.
  • the gantry cylinders 58 are retracted, and thus the gantry 18 is lowered, until the rollers 42 attached to the bottom of the counterweight 34 engage the inclined bars 46 mounted on the carrier deck 30.
  • the weight of the counterweight 34 causes the counterweight 34 to travel along the inclined bars 46 until the counterweight 34 is sufficiently far from the crane upperworks 26 to allow the crane upperworks 26 to rotate freely.
  • the handling linkage 62 is then disconnected from the counterweight 34.
  • the crane 10 can be rotated to a position where it can remove the individual sections of the counterweight 34 and place them, for example, on the ground, on a trailer for transport to another jobsite, or on another crane.
  • Installation of the counterweight 34 may proceed in a reverse sequence of the preferred removal process described above.
  • the gantry 18, via the gantry cylinders 58, is lowered and the handling linkage 62 is connected to the counterweight 34.
  • the gantry cylinders 58 are extended, thereby raising the gantry 18 and, first, moving the counterweight along the inclined bars 46 and, then, raising the counterweight into the air.
  • the counterweight 34 is raised to the position at which the counterweight 34 is supported upon the crane upperworks 26. At this location, the supporting pins (not shown) are extended into supporting holes located in the counterweight 34.
  • the gantry cylinders 58 are then slightly retracted such that the total weight of the counterweight 34 is supported by the supporting pins.
  • the handling linkage 62 is then disconnected from the counterweight 34, the gantry 18 is raised to its normal operating position and the gantry cylinders 58 are totally retracted.
  • rollers 42 and inclined bars 46 may be used in the counterweight installation apparatus 38 of the present invention.
  • Each set of inclined bars 46 define an inclined surface such that, in the preferred embodiment, there are two parallel inclined surfaces on the carrier deck 30.
  • the rollers 42 and the inclined bars 46 may have flat matching surfaces.
  • the rollers 42 are V-shaped and the inclined bars 46 are shaped to cooperate with the V-shaped rollers 42 (See FIG. 5).
  • the gantry cylinders 58 and the supporting pins may be powered by any suitable control means, including hydraulic means.
  • the gantry cylinders 58 are hydraulically-powered and the supporting pins are pneumatically-powered.
  • the use of two gantry cylinders 58 is preferred.
  • the counterweight 34 comprises a number of individual counterweight sections, including a bottom counterweight section 66, a middle counterweight section 70, a top counterweight section 74 and any suitable number of side counterweight sections 78.
  • the individual counterweight sections 66, 70, 74, 78 are preferably interconnected so that all of the sections may be raised and lowered as one counterweight 34.
  • the individual counterweight sections 66, 70, 74, 78 may be interconnected in any suitable manner.
  • a counterweight connector 82 is the preferred connector means.
  • FIGS. 8 and 9 show plan and side views, respectively, of the bottom counterweight section 66. As shown in FIG. 9, the rollers 42 are attached to this section of the counterweight 34. A cavity 86 is defined in the bottom counterweight section 66 to accommodate the inclined bars 46.
  • FIGS. 10 and 11 show plan and side views, respectively, of the middle counterweight section 70. As shown in FIG. 7, the middle counterweight section 70 fits within the base portion 90 (FIGS. 7 and 9) of the bottom counterweight section 66.
  • FIGS. 12 and 13 show plan and side views, respectively, of the top counterweight section 74. As shown in FIG. 7, the top counterweight section 74 rests above and partially around the middle counterweight section 70. To raise and lower the counterweight 34, as previously discussed, the handling linkage 62 is connected to brackets 94 located on the top side of the top counterweight section 74.
  • FIG. 14 shows a plan view of a side counterweight section 78.
  • a number of side counterweight sections 78 may be placed atop one another on the side portions 98 (FIG. 13) of the top counterweight section 74.
  • the side counterweight sections 78 and the top side of the top counterweight section 74 define a recess 100 (FIG. 7) in which the gantry 18 rests when it is lowered, i.e., when the crane 10 is moved to another jobsite.
  • crane gantries typically have two gantry legs positioned adjacent one another on a crane bed.
  • FIG. 4 shows only two roller and inclined bar assemblies positioned side-by-side, the present invention includes any suitable number of such assemblies extending into and along the Figure.
  • the counterweight installation and removal apparatus 38 of the present invention allows a truck-mounted crane 10 to install and remove its own counterweight 34. Furthermore, the apparatus 38 allows the counterweight 34 to be positioned on the crane carrier deck 30, thereby eliminating the need for maneuvering the crane 10 to the counterweights' 34 location. The removed counterweight 34 provides clearance for the crane upperworks 26 to rotate freely past the counterweight 34.
  • the counterweight installation apparatus 38 of this invention may include as many of the above-described elements as appropriate for the application.
  • the embodiment described above is to be considered in all respects as illustrative and not restrictive.
  • the scope of the invention is indicated by the following claims rather than by the foregoing description.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Claims (14)

  1. Grue (10) montée sur camion, comprenant une plate-forme de transport (30), un contrepoids (34) ayant une surface inférieure, et un appareil d'installation et d'extraction de contrepoids, caractérisée en ce que :
    a) plusieurs rouleaux en V (42) sont fixés à la surface inférieure du contrepoids (34) ou à la plate-forme de transport de grue (30), et
    b) au moins une surface inclinée est formée par la surface de plusieurs barres inclinées (46) placées sur la plate-forme de transport de grue (30) ou la surface inférieure du contrepoids (34) respectivement, afin qu'elle coopère avec les rouleaux en V (42) lorsque le contrepoids (34) est installé ou est retiré, les barres inclinées (46) ayant une configuration correspondant à celle des rouleaux en V (42) pour assurer l'alignement côte à côte du contrepoids.
  2. Grue (10) montée sur camion selon la revendication 1, dans laquelle la surface inclinée au moins comporte deux surfaces inclinées parallèles.
  3. Grue (10) montée sur camion selon la revendication 2, dans laquelle chacune des deux surfaces inclinées est formée par les surfaces supérieures de deux barres inclinées (46).
  4. Grue (10) montée sur camion selon l'une quelconque des revendications précédentes, dans laquelle les rouleaux en V (42) sont au nombre de quatre rouleaux.
  5. Grue (10) montée sur camion selon l'une quelconque des revendications précédentes, comprenant en outre un portique (18) qui comporte une liaison de manutention raccordée de façon amovible au contrepoids (34).
  6. Grue (10) montée sur camion selon la revendication 5, comprenant en outre au moins un vérin (58) de portique destiné à soulever et abaisser le portique (18).
  7. Grue (10) montée sur camion selon la revendication 6, dans laquelle un vérin de portique au moins comporte deux vérins (58).
  8. Grue (10) montée sur camion selon la revendication 6 ou 7, dans laquelle le vérin de portique au moins (58) est de type hydraulique.
  9. Grue (10) montée sur camion selon l'une quelconque des revendications précédentes, comprenant en outre un mécanisme (50) d'arrêt du contrepoids (34) à un emplacement prédéterminé sur la plate-forme (30) de transport de grue lorsque le contrepoids (34) est retiré.
  10. Grue (10) montée sur camion selon la revendication 9, dans laquelle l'emplacement prédéterminé est tel qu'il permet au mécanisme supérieur (26) de la grue de tourner librement au niveau du contrepoids (34) lorsque le contrepoids (34) est retiré du mécanisme supérieur (26) de la grue et est mis à l'emplacement prédéterminé.
  11. Grue (10) montée sur camion selon la revendication 9 ou 10, dans laquelle le mécanisme d'arrêt comporte une plaque d'arrêt (50) fixée au contrepoids (34) ou a la plate-forme (30) de transport de grue et disposée afin qu'elle coopère avec l'une au moins des barres inclinées (46) pour arrêter le déplacement du contrepoids (34).
  12. Grue (10) montée sur camion selon l'une quelconque des revendications précédentes, dans laquelle le poids du contrepoids (34) de la grue provoque un roulement des rouleaux (42) le long d'une surface inclinée au moins.
  13. Grue (10) montée sur camion selon l'une quelconque des revendications précédentes, dans laquelle les rouleaux (42) sont fixés à la surface inférieure du contrepoids (34).
  14. Grue (10) montée sur camion selon l'une quelconque des revendications précédentes, dans laquelle le contrepoids (34) comprend plusieurs sections individuelles interconnectées (66, 70, 74, 78) de contrepoids.
EP93305728A 1992-08-07 1993-07-21 Grue montée sur un camion avec dispositif pour installer le contrepoids Expired - Lifetime EP0582401B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92681292A 1992-08-07 1992-08-07
US926812 1992-08-07

Publications (2)

Publication Number Publication Date
EP0582401A1 EP0582401A1 (fr) 1994-02-09
EP0582401B1 true EP0582401B1 (fr) 1998-10-28

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Application Number Title Priority Date Filing Date
EP93305728A Expired - Lifetime EP0582401B1 (fr) 1992-08-07 1993-07-21 Grue montée sur un camion avec dispositif pour installer le contrepoids

Country Status (5)

Country Link
US (1) US5615784A (fr)
EP (1) EP0582401B1 (fr)
JP (1) JPH06171891A (fr)
CA (1) CA2101398C (fr)
DE (1) DE69321786T2 (fr)

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WO2015180007A1 (fr) * 2014-05-26 2015-12-03 徐州重型机械有限公司 Appareil et procédé d'accrochage de contrepoids combiné, et structure de montage de contrepoids

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Publication number Priority date Publication date Assignee Title
WO2015180007A1 (fr) * 2014-05-26 2015-12-03 徐州重型机械有限公司 Appareil et procédé d'accrochage de contrepoids combiné, et structure de montage de contrepoids

Also Published As

Publication number Publication date
CA2101398A1 (fr) 1994-02-08
DE69321786D1 (de) 1998-12-03
EP0582401A1 (fr) 1994-02-09
CA2101398C (fr) 1997-10-07
DE69321786T2 (de) 1999-03-18
US5615784A (en) 1997-04-01
JPH06171891A (ja) 1994-06-21

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